“While these mobile devices have been an important part of our story, they don’t offer the kind of capabilities we need to expand our app’s features in the future,” a spokesperson from WhatsApp told The Telegraph.

The app should stop working on most old devices by the end of 2016, while a few could still support the app until mid-2017.

“As we look ahead to our next seven years, we want to focus our efforts on the mobile platforms the vast majority of people use,” WhatsApp told The Telegraph.